Who's Idea Was It To Put Engine #s....
 

Just to start off, who's idea was it to put the engine number on the engine next to the transmission? It is a very big PITA to get to.

Alright, off that soap box. I have been under the assumption that my engine is a 307 based on what the previous owner told me when I bought it, I wasn't to concerned about what the engine was because it would be replaced anyway...well I got curious this weekend and checked the numbers out for myself. I could not find the identification numbers on the pass. side. Banged my head good a couple times trying to see down there to...but I did find a number on the drivers side that was interesting "3970010". I don't see this as the casting number for any 307s but I do see it as a number for the 69-79 truck 350 engine.

Is there any other way to find out if it is a 350 besides the pass. side number? It's really hard for me to get down there and I don't want to have to strip down me engine to get back there.

Thanks

Re: Who's Idea Was It To Put Engine #s....
 

look behind your alternator, there's a pad there where the head seats on the block with numbers on it to identify the engine itself, as long as the head deck hasn't been milled which means the numbers are long gone.

Re: Who's Idea Was It To Put Engine #s....
 

thats a 69-79 350 block

Re: Who's Idea Was It To Put Engine #s....
 

could be a 302 327 or 350 2 or 4 bolt mains
Depends on the crank as well
this is for the 3970010 block

3970010....302.....69....4...Z-28 Camaro
3970010....327.....69....2...Trucks and industrial
3970010....350...69-80...2 or 4

Re: Who's Idea Was It To Put Engine #s....
 

3970010 is the casting number for a large bearing 4" bore block. No way it can be a 307. I could be a 327 if someone put a 307 crank into it with 327 pistons.

Re: Who's Idea Was It To Put Engine #s....
 

same numbers on my 73 stepside after i looked under the altenator it turned out to be a HO 350 from 1977

Re: Who's Idea Was It To Put Engine #s....
 

That be cool if it was 350. You could go to the auto parts store and buy one of those cheap mirrors from by there counter and try that see if it helps out. Ya I hate the numbers in the back as well I am too big I don't event try to go back there to find out haha :D

Re: Who's Idea Was It To Put Engine #s....
 

It would explain why I get wheel spin almost everytime I move :lol:

Re: Who's Idea Was It To Put Engine #s....
 

thats the block number in my 78 jimmy,
350 and its got 4 bolt mains
never did figure the other (alt)numbers out